Organic cotton is grown for a span of 3 years on farms without the use of pesticides and chemical fertilizers, a rarity among traditional cotton growing techniques. There are strict criteria that must be followed to be certified as organic cotton free of fertilizers and pesticides.

The rivets are made of copper with the underside of the front rivets reading サムライ "Samurai" while the underside of the back rivets read "Shogyo Mujo" (諸行無常). Samurai's iron-made sunrise buttons with the "SAMURAI & CO. LTD + JAPAN'S FINEST" imprint are used for the top center and button fly.